1. E. C. Pielou. Mathematical Ecology. Wiley, New York 1977.
2. B. D. Ripley. Spatial Statistics. Wiley, New York, 1981.
3. P. J. Diggle. Statistical Analysis of Spatial Point Patterns. Academic Press, London, 1983.
4. G. Upton and B. Fingleton. Spatial Data Analysis by Example, Vol. 1: Point Pattern and Quantitative Data. Wiley, New York, 1985.
5. N. A. C. Cressie. Statistics for Spatial Data. Wiley, New York, 1993.